Heat pipe based on carbon nanotube wick and preparation method thereof

A technology of carbon nanotubes and carbon nanotube arrays, which is applied in the field of heat pipes based on carbon nanotube liquid-absorbing cores and its preparation, can solve the problems of no essential improvement in the working efficiency of heat pipes, failure to reach the overall size of heat pipes, and cumbersome manufacturing processes. To achieve the effect of simplifying the molding process, avoiding technical difficulty and cost, and reducing thermal resistance

Inactive Publication Date: 2017-04-26
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, the above-mentioned various forms of technology have not made fundamental changes to the structure of the liquid-absorbing core, and the manufacturing process is cumbersome, and the goal of greatly reducing the overall size of the heat pipe cannot be achieved, and the working efficiency of the heat pipe has not been substantially improved.

Method used

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  • Heat pipe based on carbon nanotube wick and preparation method thereof
  • Heat pipe based on carbon nanotube wick and preparation method thereof
  • Heat pipe based on carbon nanotube wick and preparation method thereof

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Embodiment Construction

[0031] The specific structure and technical effects of the present invention will be further described below in conjunction with the accompanying drawings, so as to fully understand the features and effects of the present invention.

[0032] figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of the present invention. When one end of the heat pipe is heated, the liquid evaporates, flows along the middle cavity to the condensation section, releases the heat and condenses into a liquid, and finally the liquid flows back to the evaporation section under the action of the liquid-absorbing core to complete the cycle. The overall working principle of the heat pipe with carbon nanotube liquid-absorbing core structure is basically the same as that of conventional heat pipes with traditional liquid-absorbent core structure, such as figure 2 shown. However, due to the adoption of the liquid-absorbing core structure, its overall radial dimension i...

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Abstract

The invention provides a heat tube based on a carbon nano tube wick and a manufacturing method of the heat tube. The heat tube comprises a tube shell, the wick in the tube shell and work fluid, wherein the wick is the carbon nano tube wick, the tube shell is made of a metal material with good heat conductivity, and the work fluid is packaged in the tube shell and has good wettability for the carbon nano tube wick. The outer diameter of the tube shell is smaller than 1 mm, the wall thickness of the tube is smaller than 0.2 mm, and the contact angle of the work fluid and a carbon nano tube is smaller than 80 degrees. The heat tube has the advantages of being superminiature and high in heat transfer efficiency. By means of introduce of a carbon nano tube synthesis method based on a chemical process, high technical difficulty and the cost problem caused by other micro-nano processing methods are avoided.

Description

technical field [0001] The invention relates to a heat pipe heat exchange device, in particular to a heat pipe based on a carbon nanotube liquid-absorbing core and a preparation method thereof. Background technique [0002] With the rapid development of modern electronic technology and ultra-high-density integrated manufacturing industry, the heat generation and heat flux density of electronic devices such as high-performance chips and LED chips are getting higher and higher. How to quickly and effectively dissipate the heat generated by these devices, Become a technical bottleneck restricting their further upgrade. At the same time, there is an increasing demand for small-sized, high-efficiency heat transfer components in the fields of electronic heat dissipation, medical equipment, and military weapons. For example, in the rapidly developing mobile electronic equipment, the processing capability of the CPU is getting stronger and stronger, but the mobile equipment itself ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D15/02
CPCY02P20/10
Inventor 黄永华陈强
Owner SHANGHAI JIAO TONG UNIV
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